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Amazon DOP-C02 자격증은 산업에서 매우 높은 가치를 두고 있으며, 전 세계적으로 인정받고 있습니다. 이는 수험자가 AWS 플랫폼에서 고가용성, 장애 허용 및 확장 가능한 시스템을 설계, 배포 및 관리하는 능력을 보여주며, 다양한 커리어 기회를 열어줄 수 있습니다.

Amazon DOP-C02 시험은 DevOps 관행 및 도구에 대한 전문 지식을 시연하려는 개인을 위해 Amazon Web Services (AWS)가 제공하는 전문 수준 인증입니다. 이 인증은 AWS 플랫폼을 깊이 이해하고 DevOps 솔루션을 규모로 설계, 구현 및 관리 할 수있는 숙련 된 DevOps 전문가를위한 것입니다.

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DOP-C02 시험을 준비하기 위해, 후보자들은 AWS에서 제공하는 공식 교육 과정, 실습 시험, 백서 등 다양한 자원을 활용할 수 있습니다. 공식 AWS 인증 DevOps 엔지니어 - 전문가 시험 대비 디지털 코스를 권장합니다. 이 코스는 시험에서 중요한 개념과 최상의 실천 방법을 다룹니다. 게다가 AWS 서비스와 도구에 대한 실습 경험이 시험에서 성공하는 데 매우 중요합니다.

최신 AWS Certified Professional DOP-C02 무료샘플문제 (Q419-Q424):

질문 # 419
A company has an RPO of 24 hours and an RTO of 10 minutes for a critical web application that runs on Amazon EC2 instances. The company uses AWS Organizations to manage its AWS account. The company wants to set up AWS Backup for its AWS environment.
A DevOps engineer configures AWS Organizations for AWS Backup. The DevOps engineer creates a new centralized AWS account to store the backups. Each EC2 instance has four Amazon Elastic Block Store (Amazon EBS) volumes attached.
Which solution will meet this requirement MOST securely?

A. Create encrypted vaults in both accounts by using the source account's AWS KMS key. Configure AWS Backup to create EC2 AMIs. Copy the AMIs to the centralized vault.
B. Create encrypted backup vaults and customer managed AWS KMS keys in both accounts. Configure AWS Backup to create full EC2 backups as AMIs. Copy the backups to the centralized vault.
C. Create encrypted vaults in both accounts. Use a customer managed KMS key in the source account. Use an AWS managed key in the centralized account. Configure AWS Backup to create EC2 AMIs. Copy the AMIs to the centralized vault.
D. Create backup vaults in both accounts. Use AWS managed keys for encryption. Configure AWS Backup to create EC2 AMIs. Copy the AMIs to the centralized vault.

정답：B

설명：
The question emphasizes "MOST securely" and involves a multi-account backup strategy with a centralized backup account. AWS Backup best practice for high-security environments is to use customer managed KMS keys for encrypting backup vaults rather than AWS managed keys. Customer managed keys provide tighter control over key lifecycle, key policies, and cross-account access.
Option A creates encrypted backup vaults in both the source and centralized accounts, each protected by a customer managed KMS key in that account. AWS Backup is then configured to create full EC2 backups (AMIs) and copy them to the centralized backup vault. This design ensures:
* Encryption at rest in both accounts.
* Independent key control and policies per account.
* Secure cross-account backup copy behavior governed by explicit KMS key grants and vault access policies.
Option B incorrectly uses the source account's KMS key to encrypt vaults in both accounts, which is not the recommended pattern; each account should manage its own CMK. Options C and D rely partially or fully on AWS managed keys, which are less appropriate when the requirement explicitly stresses maximum security and control.
Therefore, Option A best satisfies both the RPO/RTO goals (daily AMI backups with rapid restore) and the strongest encryption posture.

질문 # 420
A DevOps engineer is working on a project that is hosted on Amazon Linux and has failed a security review. The DevOps manager has been asked to review the company buildspec. yaml die for an AWS CodeBuild project and provide recommendations. The buildspec. yaml file is configured as follows:

What changes should be recommended to comply with AWS security best practices? (Select THREE.)

A. Use AWS Systems Manager run command versus sec and ssh commands directly to the instance.
B. Store the db_password as a SecureString value in AWS Systems Manager Parameter Store and then remove the db_password from the environment variables.
C. Update the CodeBuild project role with the necessary permissions and then remove the AWS credentials from the environment variable.
D. Add a post-build command to remove the temporary files from the container before termination to ensure they cannot be seen by other CodeBuild users.
E. Move the environment variables to the 'db.-deploy-bucket 'Amazon S3 bucket, add a prebuild stage to download then export the variables.

정답：A,B,C

설명：
B) Update the CodeBuild project role with the necessary permissions and then remove the AWS credentials from the environment variable.
C) Store the DB_PASSWORD as a SecureString value in AWS Systems Manager Parameter Store and then remove the DB_PASSWORD from the environment variables. E. Use AWS Systems Manager run command versus scp and ssh commands directly to the instance.

질문 # 421
A company runs an application on an Amazon Elastic Container Service (Amazon ECS) service by using the AWS Fargate launch type. The application consumes messages from an Amazon Simple Queue Service (Amazon SQS) queue. The application can take several minutes to process each message from the queue. When the application processes a message, the application reads a file from an Amazon S3 bucket and processes the data in the file. The application writes the processed output to a second S3 bucket. The company uses Amazon CloudWatch Logs to monitor processing errors and to ensure that the application processes messages successfully.
The SQS queue typically receives a low volume of messages. However, occasionally the queue receives higher volumes of messages. A DevOps engineer needs to implement a solution to reduce the processing time of message bursts.
Which solution will meet this requirement in the MOST cost-effective way?

A. Create an Auto Scaling group of EC2 instances. Create a capacity provider in the ECS cluster by using the Auto Scaling group. Change the ECS service to use the EC2 launch type.
B. Register the ECS service as a scalable target in AWS Application Auto Scaling. Configure a target tracking scaling policy to scale the service in response to the queue size.
C. Send messages to an Amazon EventBridge event bus instead of the SQS queue. Replace the ECS service with an EventBridge rule that launches ECS tasks in response to matching events.
D. Increase the maximum number of messages that Amazon SQS requests to batch messages together. Use long polling to minimize the number of API calls to Amazon SQS during periods of low traffic.

정답：B

설명：
Comprehensive and Detailed Explanation From Exact Extract of DevOps Engineer Documents Only:
AWS recommends Application Auto Scaling for ECS services to dynamically adjust the number of running tasks based on Amazon SQS queue metrics such as ApproximateNumberOfMessagesVisible. By using target tracking scaling policies, ECS on Fargate scales automatically when the queue backlog grows and scales down when traffic decreases - a fully managed, cost-efficient solution (see ECS Service Auto Scaling Developer Guide).

질문 # 422
A company wants to use a grid system for a proprietary enterprise m-memory data store on top of AWS. This system can run in multiple server nodes in any Linux-based distribution. The system must be able to reconfigure the entire cluster every time a node is added or removed. When adding or removing nodes an /etc./cluster/nodes config file must be updated listing the IP addresses of the current node members of that cluster.
The company wants to automate the task of adding new nodes to a cluster.
What can a DevOps engineer do to meet these requirements?

A. Create a user data script that lists all members of the current security group of the cluster and automatically updates the /etc/cluster/. nodes config. Tile whenever a new instance is added to the cluster.
B. Create an Amazon S3 bucket and upload a version of the /etc./cluster/nodes config file Create a crontab script that will poll for that S3 file and download it frequently. Use a process manager such as Monit or system, to restart the cluster services when it detects that the new file was modified. When adding a node to the cluster edit the file's most recent members Upload the new file to the S3 bucket.
C. Put the file nodes config in version control. Create an AWS CodeDeploy deployment configuration and deployment group based on an Amazon EC2 tag value for thecluster nodes. When adding a new node to the cluster update the file with all tagged instances and make a commit in version control. Deploy the new file and restart the services.
D. Use AWS OpsWorks Stacks to layer the server nodes of that cluster. Create a Chef recipe that populates the content of the 'etc./cluster/nodes config file and restarts the service by using the current members of the layer. Assign that recipe to the Configure lifecycle event.

정답：D

설명：
You can run custom recipes manually, but the best approach is usually to have AWS OpsWorks Stacks run them automatically. Every layer has a set of built-in recipes assigned each of five lifecycle events-Setup, Configure, Deploy, Undeploy, and Shutdown. Each time an event occurs for an instance, AWS OpsWorks Stacks runs the associated recipes for each of the instance's layers, which handle the corresponding tasks. For example, when an instance finishes booting, AWS OpsWorks Stacks triggers a Setup event. This event runs the associated layer's Setup recipes, which typically handle tasks such as installing and configuring packages

질문 # 423
A company uses AWS CodeArtifact to centrally store Python packages. The CodeArtifact repository is configured with the following repository policy.

A development team is building a new project in an account that is in an organization in AWS Organizations.
The development team wants to use a Python library that has already been stored in the CodeArtifact repository in the organization. The development team uses AWS CodePipeline and AWS CodeBuild to build the new application. The CodeBuild job that the development team uses to build the application is configured to run in a VPC Because of compliance requirements the VPC has no internet connectivity.
The development team creates the VPC endpoints for CodeArtifact and updates the CodeBuild buildspec yaml file. However, the development team cannot download the Python library from the repository.
Which combination of steps should a DevOps engineer take so that the development team can use Code Artifact? (Select TWO.)

A. Specify the account that hosts the repository as the delegated administrator for CodeArtifact in the organization.
B. Share the CodeArtifact repository with the organization by using AWS Resource Access Manager (AWS RAM).
C. Update the repository policy's Principal statement to include the ARN of the role that the CodeBuild project uses.
D. Create an Amazon S3 gateway endpoint Update the route tables for the subnets that are running the CodeBuild job.
E. Update the role that the CodeBuild project uses so that the role has sufficient permissions to use the CodeArtifact repository.

정답：D,E

설명：
"AWS CodeArtifact operates in multiple Availability Zones and stores artifact data and metadata in Amazon S3 and Amazon DynamoDB. Your encrypted data is redundantly stored across multiple facilities and multiple devices in each facility, making it highly available and highly durable." https://aws.amazon.com/codeartifact
/features/ With no internet connectivity, a gateway endpoint becomes necessary to access S3.

질문 # 424
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